Hair cutting machine



'. March 16, 1937.

K: MARHOLT 2,074,020

HAIR CUTTING MACHINE File d Oct. 9, 1955 Fig. 3

//vV/\/7'0R KARL MARHOL 7' /-//5 ATTORNEY Perelman". 16, E937 mp STATESHAIR cn'r'rmo MACHINE Karl Marholt, Vienna, Austria Application October9, 1935, Serial No. 44,212 In Austria February 5, 1935 10 Claims.

My invention relates to hair cutting machines for removing hairs fromcavities, for instance the nostrils or the ear opening, of the kindhaving two tubes with cutting teeth and slots on their end rotatablyarranged within each other. Machines of this type are operated byrotating the tubes I relatively to each other. My invention relatesparticularly to the driving means for efiecting such rotation by handand aims to provide a machine of the class described which may beveasily and accurately operated by two fingers of the hand holding thesame and enabling to effect the delicate operation of hair removing fromcavities of the human body with great precision and without an'y dangerof severing the skin. For this purpose, it is of great importance toavoid any back-action of the cutting movement upon the hand holding themachine. invention, thereforeya driving mechanism is provided whichmakes it possible to effect the rotation of the tubes by pressing uponone or two lateral lever arms with the fingers of the hand holding themachine.

A feature of my invention consists inproviding a driving mechanism byvirtue of which the cutting movement of the tubes does not involve anychange in their direction, so that the operation may be performed withcomplete safety. In a preferred embodiment of the invention, the outertube remains in an unvarying position in relation to the holding handwhile the cutting is effected by rotation of the inner tube in order toavoid any undesired movement and therefore also avoiding any danger ofbringing the cutting teeth in touch with the skin and cutting the same.

A further object of the invention is to provide a machine of this kindwhich may be easily dismounted and reassembled for cleaning purposes andwhich may also be cleaned in the assembled state by leading a stream ofair, water or any other cleaning agent through a bore passing throughthe inner tube.

The drawing shows the invention in an enlarged scale by way of example.Fig. 1 represents a side elevation of the device, Fig. 2 a view frombelow and Fig. 3 a section-through the tubes along the axis with thelever arms removed.

. The outer of, the two cylinders or tubes arranged within each other isdesignated by the reference I, the inner by-2. The outer cylinder isprovided at 3, the inner at 4 in a knownmanner with sharply edged teethand slots, acting like shears if the cylinders are rotated relatively toeach other.. The inner cylinder is thickened at its lower end andprovided with two pins arranged According to my at opposite ends of adiameter, the ends of which. are protected by bosses. On the outercylinder i the two studs 1 are screwed in, on which the two lever arms 8are rotatably mounted. These lever arms have U-shaped cross-section andembrace the two cylinders. A flange 9 .on each of the two lever arms,lying in the plane of movement, is provided with a slot Ill, in whichoneof the pins 6 engages, whereby a gear connection is provided whicheffects a rotation of the tubes I and 2 against each other, if the leverarms 8 are compressed. The -fiattened portions 5 of the thickened endsof the inner tube 2 enables a closer compression of the lever arms 8 intheir end position. A spring ll always holds the lever arms apart, sothat an easy operation with one hand is possible. 1

In order'to allow an easy dismounting of thedevice for the purpose ofcleaning it, the slots III are open towards the rear, so that the innercylinder 2 may be easilypulle'd out. A screw 12, a pin under springtension or the like serves to hold the tubes together. The screw I2 isscrewed into the outer tube l and engages with its point a groove I3arranged on a part or on the entire circumference of the inner tube 2.

The inner tube 2 is suitably provided in its longitudinal direction,with a bore passing therethrough and which may serve to conduct acleaning agent (air, water, alcohol or the like), the arrangement of thegear elements being suitable so that they do not project into said bore.

When used, the parts 3 and 4 are introduced into the cavities, so thatthe hairs extend into the slots between the teeth. If the lever arms 8are compressed, the tubes are rotated against each other and the hairsare clipped.

Several modifications are possible without leaving the scope of theinvention. In particular, the spring I I may be dispensed with, if thelever arms are provided with handles for the insertion of the holdingfingers. The spring may also be fastened on both tubes l and 2 and maytend to rotate the same opposite'to the direction of actuation. The gearelements 6 and'lll may also be of other kind, for instance on theflanges 9, racks may be attached which are in mesh with a pinion gear onpart 5.

The tubes may be cylindrical or may have another similar form, forinstance the form of truncated cones with the cutting teeth and slots onthe smaller base.

What I claim is:

1. In a hair cutting machine, two tubes provided with cutting teeth andslots at their ends,

one tube being rotatably arranged within the other, driving means forrotating said tubes relatively to each other, said means comprising .twosystems of interlinked members, including a pair of levers adapted to beactuated by hand, one member of each system being iulcrumed on one tubeand another member of each system being operatively connected to theother tube.

2. In a hair cutting machine, two tubes provided with cutting teeth andslots at their ends, one tube being rotatably arranged within the other,driving means for rotating said tubes relatively to each other, saidmeans comprising two systems of interlinked members symmetricallyarranged with respect to the tube axis, said members including a pair oflevers adapted to be actuated by hand and symmetrically arranged withrespect to the tube axis, one member of each system being fulcrumed onone tube and another member of each system being operatively connectedto the other tube.

3. In a hair cutting machine, two tubes provided with cutting teeth andslots at their ends, one tube being rotatably arranged within the other,driving means for rotating said tubes relatively to each other, saidmeans comprising two systems of interlinked 'members including a pair oflevers adapted to be actuated by hand, each of said levers swingingabout an axis perpendicular to the tube axis, one member of each systembeing fulcrumed on one tube and another member of each system beingoperatively connected to the other tube.

4. In ahair cutting machine, two tubes provided with cutting teeth andslots at their ends,

one tube being rotatably arranged within the other, driving meanscomprising two lateral lever arms mounted on one of said tubes to swingabout an axis perpendicular to the tube axis, andmeans attached on theother tube cooperating with saidone tube being rotatably arranged withinthe -other, driving means comprising two lateral lever arms mounted onone of said tubes to swing about an axis perpendicular to the tube axis,spring means forcing apart said lever arms and means attached on theother tube cooperating with said lever arms to rotate the tubesrelatively to each other it the lever arms are pressed together by hand.

6. In a hair cutting machine, two tubes provided with cutting teeth andslots at their ends, one tube being rotatably arranged within eachother, driving means comprising two lateral U- shaped lever armsembracing said tubes and mounted on one of said tubes to swing about anaxis perpendicular to the tube axis and means attached on the other tubecooperating with said lever arms to rotate the tubes relatively to eachthe bore of the inner tube.

other if the lever arms are pressed together by hand.

7. In a hair cutting machine, two tubes provided with cutting teeth andslots at their ends, one tube being rotatably arrangedwithin each other,driving means comprising two lateral U- shaped lever arms embracing saidtubes and mounted on one 01 said tubes to swing about an axisperpendicular to the tube axis, each of said U-shaped lever arms havinga flange extending in the direction of movement and provided with anaperture, radial pins arranged on the other tube engaging said aperturesto rotate the tubes relatively to each other it the lever arms arepressed together by hand.

8. In a hair cutting machine, two tubes provided with cutting teeth andslots at their ends, one tube being rotatably arranged within eachother, driving means comprising two lateral U- shaped lever armsembracing said tubes and mounted on the outer of said tubes to swingabout an axis perpendicular to the tube axis, each of said U-shapedlever arms having a flange extending in the direction of movement andprovided with a rearwardly open slot, radial pins arranged on the inner,removable tube engaging said slots to rotate the tubes relatively toeach other if the lever arms are pressed together by hand.

9. In a hair cutting machine, two tubes provided with cutting teeth andslots at their ends, one tube being rotatably arranged within eachother, driving means comprising two lateral U- shaped lever armsembracing said tubes and mounted on the outer of said tubes to swingabout an axis perpendicular to the tube axis, each of said U-shapedlever arms having a flange extending in the direction of movement andprovided with a. rearwardly open slot, radial pins arranged on theinner, removable tube engaging said slots to rotate the tubes relativelyto each other if the lever arms are pressed together by hand, the outertube being provided with a fastening screw engaging with its point acircumferential groove on the inner tube.

10. In a hair cutting machine, two tubes having at their ends cuttingteeth and slots, one tube being rotatably arranged within the other, theinner tube having a bore passing therethrough, driving means forrotating said tubes relatively to each other, said means comprising twolateral U-shaped lever arms embracing said tubes and mounted on theouter of said tubes to swing about an axis perpendicular to the tubeaxis, each of said U-shaped lever arms having a flange extending in thedirection of its movement and provided with an aperture, radial pinsarranged on the inner tube engaging said apertures to rotate the tubesrelatively to 'each other if the lever arms are pressed together byhand, said pins being so arranged as to not project into KARLMARHOIL'I'.

